I love this song. So in my POV imagine, Zuko and Katara are together but they end up having arguments about trust issues. So she’s confronting Zuko about all the times he’s betrayed her so he has to see where she’s coming from. It can be hard to trust again after it’s been broken. Especially more than once. Deep down they aren’t sure if it’s best to separate or fight for their relationship. Once Katara comes close to losing Zuko forever, she realizes how much she truly loves him and doesn’t want to leave his side.